APC anti-mouse CD121a (IL-1 R, Type I/p80) Antibody

Pricing & Availability
JAMA-147 (See other available formats)
Regulatory Status
Other Names
IL-1 Receptor type I, IL-1RI, p80
Armenian Hamster IgG
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Product Citations
Mouse fibroblast NIH/3T3 cells stained with JAMA-147 APC
  • JAMA147_APC_020110
    Mouse fibroblast NIH/3T3 cells stained with JAMA-147 APC
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113509 50 µg 114€
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CD121a is an 80 kD IL-1 receptor type I. It is a transmembrane glycoprotein and a member of the immunoglobulin superfamily expressed on T cells, thymocytes, dendritic cells, fibroblasts, vascular endothelial cells, epithelial cells and neural cells. CD121a binds the mature forms of IL-1α, IL-1β, and IL-1Ra proteins. High affinity binding and signaling by the type I IL-1 receptor requires CD121a and the accessory protein, IL-1R AcP, which does not bind IL-1 alone, but forms a dimer capable of binding IL-1.

Product Details
Technical Data Sheet (pdf)

Product Details

Verified Reactivity
Antibody Type
Host Species
Armenian Hamster
Extracellular domain of mouse IL-1R1
Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide.
The antibody was purified by affinity chromatography, and conjugated with APC under optimal conditions.
0.2 mg/ml
Storage & Handling
The antibody solution should be stored undiluted between 2°C and 8°C, and protected from prolonged exposure to light. Do not freeze.

FC - Quality tested

Recommended Usage
Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is ≤1.0 µg per million cells in 100 µl volume. It is recommended that the reagent be titrated for optimal performance for each application.
Excitation Laser
Red Laser (633 nm)
Application Notes

Additional reported applications (for the relevant formats) include: immunoprecipitation1 and receptor blocking in vivo1. Clone JAMA-147 prevents the binding of IL-1 to the type 1 IL-R1,2. The LEAF™ or Ultra-LEAF™ purified antibody is recommended for neutralization and functional assays (contact our custom solutions team).

For the most successful immunofluorescent staining results, it may be important to maximize signal over background by using a relatively bright fluorochrome-antibody conjugate (Cat. No. 113506) or by using a high sensitivity, three-layer staining technique (e.g., including a biotinylated antibody (Cat. No. 113504) or biotinylated anti-Armenian hamster IgG second step (Cat. No. 405501), followed by SAv-PE (Cat. No. 405204)).

Application References
  1. Rogers HK, et al. 1992. P. Natl. Acad. Sci. USA 89:1011. (Neut)
  2. Rogers HW, et al. 1994. J. Immunol. 153:2093. (Neut)
Product Citations
  1. Polese B, et al. 2021. Cell Reports. 36(4):109456. PubMed
  2. Brigas HC, et al. 2021. Cell Reports. 36(9):109574. PubMed
  3. Ng S, et al. 2022. Sci Rep. 12:14087. PubMed
  4. Singhal P, et al. 2016. Proc Natl Acad Sci U S A. 113: 122 - 127. PubMed
AB_2264757 (BioLegend Cat. No. 113509)

Antigen Details

Ig superfamily, complex of CD121a and IL-1R AcP forms high affinity IL-1 binding site, 80 kD
T cells, thymocytes, dendritic cells, fibroblasts, vascular endothelial cells, epithelial cells, neural cells
Innate and adaptive immune response
IL-1α and IL-1β
Cell Type
T cells, Thymocytes, Dendritic cells, Fibroblasts, Endothelial cells, Epithelial cells
Biology Area
Immunology, Innate Immunity
Molecular Family
CD Molecules, Cytokine/Chemokine Receptors
Antigen References

1. Sims JE. 2002. Curr. Opin. Immunol. 14:117.
2. Rogers HK, et al. 1992. P. Natl. Acad. Sci. USA 89:1011.

Gene ID
16177 View all products for this Gene ID
View information about CD121a on UniProt.org

Related FAQs

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Go To Top Version: 1    Revision Date: 11/30/2012

For Research Use Only. Not for diagnostic or therapeutic use.


This product is supplied subject to the terms and conditions, including the limited license, located at www.biolegend.com/terms) ("Terms") and may be used only as provided in the Terms. Without limiting the foregoing, BioLegend products may not be used for any Commercial Purpose as defined in the Terms, resold in any form, used in manufacturing, or reverse engineered, sequenced, or otherwise studied or used to learn its design or composition without express written approval of BioLegend. Regardless of the information given in this document, user is solely responsible for determining any license requirements necessary for user’s intended use and assumes all risk and liability arising from use of the product. BioLegend is not responsible for patent infringement or any other risks or liabilities whatsoever resulting from the use of its products.


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This data display is provided for general comparisons between formats.
Your actual data may vary due to variations in samples, target cells, instruments and their settings, staining conditions, and other factors.
If you need assistance with selecting the best format contact our expert technical support team.


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